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SpyIntel [72]
3 years ago
10

(a + b)² = a² + 2ab + b2 with step by step explanation​

Mathematics
1 answer:
Dahasolnce [82]3 years ago
3 0

Step-by-step explanation:

Given: (a+b)²

To prove: (a+b)² = a² + 2ab + b²

Proof:-

(a+b)² = (a+b)(a+b)

(a+b)²=a(a+b)+b(a+b)

(a+b)² = a²+ab+ab+b²

(a+b)² = a²+2ab+b².

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Determine whether each data set description represents a sample or complete information?
CaHeK987 [17]

Answer:

1, sample.

2, sample

3, complete

4, complete

Step-by-step explanation:

If i am wrong, please let me know. i will give points back + a few extra.


4 0
4 years ago
Read 2 more answers
A number is picked randomly in the range [2,8]. If past selection indicates that the numbers picked are less than 5, what is the
yawa3891 [41]

Answer:

a) P = 2/7

b) P = 4/7

c) P = 1/7

Step-by-step explanation:

In the range of [2,8], we have the following integers which are: 2, 3, 4, 5, 6, 7, 8. So this is a total of 7 integers.

a) We look for the probability that the numbers are less than 4, so we conclude that there are possible numbers 2 and 3 out of possible 7, so the required probability is equal to P = 2/7.

b) We look for the probability that the numbers are greater than 4, so we conclude that there are possible numbers 5, 6, 7, 8 out of possible 7, so the required probability is equal to P = 4/7.

c) Based on the previous two examples, we conclude that the required probability is P = 2/7· 1/2=1/7.

7 0
4 years ago
HELP ME PLEASE
Flauer [41]
Combine like terms by adding their FACES (Coefficients)

1) 4c² - 4               
2) 20m^4 + 6m
3) -6a³ - 19a² + 8a - 10
4) -10a² - 2b + 3ab³ + 4a²b² -5b^4 - 9a²b² - 12a³b + 15ab³ = -10a² - 2b + 18ab³ - 5a²b² - 12a³b - 5b^4
5) 5a³ - 5a²
8 0
3 years ago
A farmer has 64 feet of fence to enclose a rectangular vegetable garden. which dimensions would result in the biggest area for t
Blababa [14]
The dimensions that would result to maximum area will be found as follows:
let the length be x, the width will be 32-x
thus the area will be given by:
P(x)=x(32-x)=32x-x²
At maximum area:
dP'(x)=0
from the expression:
P'(x)=32-2x=0
solving for x
32=2x
x=16 inches
thus the dimensions that will result in maximum are is length=16 inches and width=16 inches

7 0
3 years ago
14.88 + x = 17.05 What is the value of x?
Masteriza [31]

Answer:

x=2.17

Step-by-step explanation:

14.88+x=17.05

We move all terms to the left:

14.88+x-(17.05)=0

We add all the numbers together, and all the variables

x-2.17=0

We move all terms containing x to the left, all other terms to the right

x=2.17

5 0
3 years ago
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